Of course, this is not the first time an animal has gotten loose on a baseball field, nor will it be the last. But it does raise an interesting question: How do various animals get on to football fields and baseball diamonds?

No, the answer isn't "They pay with a ticket like everybody else."

Seriously. Stadiums are busy places. They are packed with patrons, employees and players. Animals tend to be wary of human interaction.

Now, squirrels do have the ability to climb wires and can fit through small cracks and crevices, but it just seems odd that animals, whether they be squirrels, raccoons, cats, dogs or even foxes can weave their way through the intricate interworkings of a stadium to the point where they are actually on the field.